package com.atguigu.gulimall.member.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class MemberFeignConfig {

    @Bean
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                //TODO 为什么这里不加if的话，用线程池就会有空指针问题，但不用线程池就没问题？
                if(requestAttributes != null){
                    HttpServletRequest request = requestAttributes.getRequest();
                    requestTemplate.header("cookie",request.getHeader("cookie"));
                }
            }
        };
    }
}
